Speaking as a Jew, while this is accurate, it’s not that common in the US among non-orthodox families. There was a poll of American Jews a while ago that found less than a quarter keep kosher.
That reminds me of the time I was in Jerusalem on Saturday (the Sabbath, so like everything was closed) and I stumbled upon a restaurant that reveled in being as un-kosher as possible: the main menu item was cheeseburgers and of course they were open on Saturdays. There were probably other things they did that rubbed people the wrong way because apparently the restaurant had been firebombed at one point.
Not only that, but the kosher requirements (no dairy and meat together), depending on how kosher you are, also to apply to the plates the meal is served on, the equipment the meal is cooked on, and food storage areas; you need strictly segregated facilities, and washing between uses does not make it kosher. The requirements are strict to the point where rabbis have to regularly certify kosher restaurants as kosher.
Of course not, but rituals that survive probably have some kind of objective survival value, so it's reasonable to try to figure out what these ancient food taboos origin really are.
For example, shell fish were probably or average unhealthy to eat back in the day. So claiming God commanded The People to not eat it was the FDA implementation of its time.
I'm definitely not an expert on Jewish law (my exposure to it is through reading Leviticus as a Christian). I suppose it's possible that the reason changed over time. However, now that I think about it the health reasons that others have pointed out seem to make more sense. Especially since I would presume that a cow wouldn't have the intelligence to actually be concerned about the precise manner in which you eat it.
Is it though? I tried to find a source for your claim but came up with inconclusive studies, at best. Do you have any sources for this or is it just a well known myth?
No. That's an extrapolation protein blocking calcium absorption. But unless you eat fake American dairy products like yogurt or "American cheese", there tends to be protein in that cheese.
Incidentally, oxalic acid found in spinach also blocks calcium. Also beans and such have similar effect.
American cheese and yogurt have significant protein. American-produced fat free Greek yogurt particularly is high in protein.
You may be thinking of Velveeta and Kraft Singles but they don’t qualify by the FDA to be called processed cheese, they’re a cheese product. But even they have significant protein, albeit less.
